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This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs. | 
Determine the widget that initiated a link callback
#include <Ap.h> PtWidget_t *ApWidget( PtCallbackInfo_t *cbinfo );
Ap
ApWidget() is used within module setup functions to determine the widget that initiated the link callback.
A pointer to the initiating widget.
mysetup_function( ..., PtCallbackInfo_t cbinfo ) {
    if (ApName(ApWidget(cbinfo)) == ABN_widget1) {
        /* setup based on widget1 */
    } else {
        if (ApName(ApWidget(cbinfo)) == ABN_widget2) {
            /* setup based on widget2 */
        } else {
            /* common setup */
        }
    }
    return( Pt_CONTINUE );
}
Photon
| Safety: | |
|---|---|
| Interrupt handler | No | 
| Signal handler | No | 
| Thread | No | 
For another method of determining the widget that initiated a link callback, see the ApInfo_t structure.
PtCallbackInfo_t in the Photon Widget Reference
"Module setup functions" in the Working With Code chapter of the Photon Programmer's Guide
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